 Indeed, one of the aims of Iskandar Muda's campaigns was to bring prisoners-of-war who could act as slaves for agricultural production.One reason for Iskandar Muda's success, in contrast to the weaker sultans who preceded and succeeded him, was his ability to suppress the Acehnese elite, known as the "orang kaya" ("powerful men").Through the royal monopoly on trade, he was able to keep them dependent on his favour.